Artemis II's new spacesuits pose a significant risk to astronauts during moonwalks due to excessive weight and bulkiness, according to former NASA astronauts. While designed for enhanced mobility and safety, the Axiom Extravehicular Mobility Unit (AxEMU) suits weigh over 300 pounds on Earth and remain substantially heavier than the iconic Apollo-era Armstrong suits, despite lunar gravity reducing their effective mass. This added burden, combined with the absence of a lunar rover on Artemis III, could create extreme physical stress for astronauts performing extended extravehicular activities (EVAs) in the moon's harsh environment.

The physical toll of moonwalking is already severe, and the new suits exacerbate it. Former astronaut Kate Rubins highlighted that astronauts will face "extreme physical stress" during EVAs, partly due to the suits' weight and the need to carry heavy life support systems. Each EVA could feel like multiple marathons, as astronauts must maneuver bulky suits while transporting all necessary equipment without a rover to assist. The sheer effort required to move even basic tools or samples could lead to fatigue and injury, undermining mission objectives.

Despite improvements, the weight remains a critical flaw. While the AxEMU offers superior mobility, custom fit, and safety features compared to Apollo-era designs, its increased mass is a major drawback. Harrison Schmitt, an Apollo 17 astronaut, emphasized the need for lighter suits with "four times the mobility and half the weight." The current design prioritizes planetary mobility but sacrifices the critical factor of reduced physical exertion, potentially jeopardizing astronaut health and mission success. NASA must address this weight issue before Artemis III launches.

Quick Fact: The Axiom Extravehicular Mobility Unit (AxEMU) suits weigh over 300 pounds on Earth.